Finding the Fourth Proportional to 151,872.10, 228,002.55 and 80,851.30

Step by Step Solution

1. Step 1: Write the proportion equation
   151,872.10 : 228,002.55 = 80,851.30 : x
2. Step 2: Convert to fraction form
   151,872.10/228,002.55 = 80,851.30/x
3. Step 3: Cross multiply
   151,872.10x = 228,002.55 × 80,851.30
4. Step 4: Simplify right side
   151,872.10x = 18,434,302,570.82
5. Step 5: Solve for x
   x = 18,434,302,570.82/151,872.10
6. Step 6: Final answer
   x = 121,380.44